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CVE-2026-14976 IBM CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-28T21:17:26.830Z and has not been modified since then. IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.8 are vulnerable to remote code execution when the collectiveController-1.0 feature is enabled. This feature's activation increases the attack surface, allowing potential attackers to execute code remotely. Organizations should verify if the affected versions are in use with this feature enabled and review the official advisory for specific mitigation steps. Limited details are provided about the vulnerability, so defenders should focus on verifying the presence of this feature in their environments and applying necessary patches or compensating controls.

Vendor
IBM
Product
WebSphere Application Server - Liberty
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-28
Original CVE updated
2026-08-05
Advisory published
2026-07-28
Advisory updated
2026-08-05

Who should care

Organizations using IBM WebSphere Application Server - Liberty with the collectiveController-1.0 feature enabled should be aware of this vulnerability and take steps to mitigate it. This includes operators, platform administrators, vulnerability management teams, and security teams who need to assess the risk and apply necessary patches or compensating controls.

Technical summary

IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.8 are vulnerable to remote code execution when the collectiveController-1.0 feature is enabled. The vulnerability is tracked as CVE-2026-14976 and has a CVSS score of 7.1. This feature's activation increases the attack surface, allowing potential attackers to execute code remotely.

Defensive priority

Organizations using IBM WebSphere Application Server - Liberty with the collectiveController-1.0 feature enabled should prioritize patching to prevent potential remote code execution.

Recommended defensive actions

  • Inventory and verify if IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.8 are in use with the collectiveController-1.0 feature enabled.
  • Apply patches or updates provided by IBM to address the vulnerability.
  • Implement compensating controls such as monitoring and exception tracking for suspicious activity.
  • Review and update security configurations to restrict access to the collectiveController-1.0 feature.

Evidence notes

The CVE record indicates IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected when the collectiveController-1.0 feature is enabled. Limited details are provided about the vulnerability. Defenders should verify the presence of this feature in their environments and review the official advisory for specific mitigation steps.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-14976 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-14976

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-14976 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-14976

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.